Tube combined with heating, cooling, and evaporating apparatus or receptacles.



T. F. SANBORN.

TUBE COMBINED WITH HEATING, COOLING, AND EVAPORATING APPARATUS 0R RECEPTACLES.

APPLICATION FILED JULY 25. I912- 1,151,292. Patented Aug. 24,1915.

[NVE/VTOR WITNESSES COLUMBIA PLANOCIRAPH cm, WASHINGTON. D- c.

\ joint and consequent leakage.

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.niuon THORNTON F. SANBORN, OF NEW YORK, N. Y A$STGNOR TO SANBORN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF TUBE COMBINED WITH HEATING, COOLING, AND EVAPORATING APPARATUS 0R RECEPTACLES.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Application filed July 25, 1912. Serial No. 711,599

To all whomv it may concern Be it known that I, THORNTON F. SAN- BORN, a citizen of the United States, residing at New York, county of New York, and State of New York, have invented certain new and useful Improvements in Tubes Combined with Heating, Cooling, and Evaporating Apparatus or Receptacles, of which the following is a specification.

This invention relates to tubes, combined with heating, cooling, and evaporating apparatus or receptacles.

Heretofore tubes which have been combined with heating, cooling, evaporating and other purposes requiring a tube with one end closed, have been provided with a plug or cap either welded, brazed, soldered, rolled or screwed thereto.

None of the foregoing methods of closing the end of the tube have been satisfactory. Where welding is resorted to, there is an uncertainty of the union of the plug or cap and tube, especially where a large number of tubes are being produced, for while many would be substantially perfect, uniformity of the weld cannot be obtained and frequently imperfect welds occur which cannot be determined until the tube is actually put in use. Where brazing is resorted to, the solder is subject to the action of any acids in contact with the tube, setting up a galvanic couple which by electrolytic action weakens the joint and causes leakage. If the tube is rolled to secure the plug, the different coeflicients of expansion of the plug and tube tend to cause opening of the Should the plug or cap be soldered, the joint is subject to galvanic action and cannot be reliably formed. Should the plug orcap be screwthreaded, it is impossible to provide a steam and fluid tight joint.

My object is to provide a tube for receptacles or apparatus for heating, cooling, evaporating and other purposes which will be provided with a closed end, constructed so that neither the tube nor the end have a joint, seam, weld or other connection of any kind whatsoever, whereby the defects heretofore set forth are entirely eliminated and leaks due to expansion, corrosive action of acids or alkalies, or through galvanic or electrolytic action, wear, or other cause, are absolutely prevented.

In carrying out my invention, I provide in combination with a wall of a heating, cooling, or evaporating receptacle or apparatus a seamlessly drawn and seamlessly closed metallic tube, one end of the tube belng closed and the other end open, the tube being without a seam, weld or joint from one end to the other.

The present invention has no reference to a stamped, pressed, brazed, welded or spun metallic article of any kind whatsoever and consists of a seamlessly drawn and seamlessly closed tube combined with a heating, cooling, evaporating or other apparatus or receptacle as set forth.

Referring to the accompanying drawing, 1 shows in section, more or less diagrammatically, a portion of the wall of any preferred or well-known heating, cooling, or evaporating apparatus or receptacle, and in longitudinal section, a tube 1 having closed end 2 and open end 8, the tube being constructed and combined with the wall 1 accordin to my presentinvention.

The tube is of a single homogeneous piece of metal, seamless throughout its length and at its end, without a joint or connection of any kind whatsoever. The tube is produced by drawing as contradistinguished from welding, brazing, stamping, pressing or spinning. The tube may be provided with any desired or preferred means for its attachment to the article, device or machine on which it is to be used or it may be secured to such article, device or machine in any desired manner, the present invention consisting in a seamlessly drawn and seamlessly closed tube combined with a heating, cooling, or evaporating apparatus or receptacle.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. The combination with a heating, cooling or evaporating receptacle or vessel, of a tube attached to a wall thereof and disposed internally of said receptacle or vessel, said tube having one end seamlessly drawn and completely closed and the other pletely closed, the open encl of the tube being sel and the tube being disposed internally of said. receptacle. e

In testimony whereofll hereunto affix my signature in presence of two Witnesses.

, THORNTON F; SANBORN. Witnesses v EDW. H. THOMAS; MILTON H. W'AssMnR.

end open, said tube being homogeneous throughout its'length and closed end.

2. The combination With a heating, cooling 011 evaporating receptacle or Vessel of a seamlessly drawn tube having one end open and its other end seamlessly drawn and com attached to a Wall of said receptacleor es- Copies of this patent may be obtained for five centseach, by addressing the Commissioner of Patents 7 Washington, I). G. V 

